Which of the Following Specific Purpose Statements Represents a Demonstration

Which of the following specific purpose statements represents a demonstration speech?

A) To explain to my audience how the process of becoming a U.S. citizen has changed over time so that they have greater awareness of the current immigration debate in our country.
B) To help my audience understand the reasons why immigrants choose to leave their country and move to the United States.
C) To show and explain to my audience how to fill out the paperwork to become a naturalized citizen of the United States so that they will be aware of how complicated the process is.
D) To show my audience the impact anti-immigrant bias has had on public policy in the United States, including drug laws, zoning laws, and even education policies.